Fig. 9-Worn High Speed Clutch Plate and Differential Bearing Adjuster

AXLE-REAR

MOTOR TRUCK SERVICE MANUAL

The high speed clutch plate and differential bearing

clutch plate. The sliding clutch gear teeth, in this case,

adjuster illustrated in Fig. 9 shows very good examples

clash against the high speed clutch plate teeth.

of severe wear of the internal teeth. This was due to

excessive rotation of the sliding clutch gear before

When failures of this type occur, a thorough examination

meshing with the internal teeth. Failures of this type are

of the sliding clutch gear teeth should be made. The

indicative of improper shifting procedure in two-speed

clash teeth wear may be so excessive that replacement

axle operation.

of the sliding clutch gear is necessary.

Excessive wear on the differential bearing adjuster

In two-speed axle operation, it is essential that drivers be

resulted from shifting an axle from high range to low

aware of the effect that varying transmission ratios in

range too slowly. The low speed side of the sliding

combination with gas or diesel engines have on the

clutch gear teeth then clash against the differential

shifting procedure. Truck operators can adjust their two-

bearing adjuster internal teeth. On the other hand,

speed axle shifting technique to obtain optimum road

shifting too rapidly from low range to high range, without

performance with minimum abuse to the axle.

sufficient pre-select time or improper throttle action,

produced the wear condition shown on the high speed